<template>
  <div id="login">
    <!--中间的容器盒子-->
    <div class="login_box">
      <!--顶部图片的div容器-->
      <div class="img_box">
        <img src="@/assets/logo.png" alt=""/>
      </div>

      <!--登录表单-->
      <el-form ref="loginFormRef" :rules="loginFormRules" :model="loginForm" label-width="0px"
               class="loginForm_box">
        <el-form-item prop="loginId">
          <el-input v-model="loginForm.loginId"
                    prefix-icon="iconfont icon-user"></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input type="password" v-model="loginForm.password" prefix-icon="iconfont icon-3702mima"></el-input>
        </el-form-item>
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 表单对应的数据对象
      loginForm: {
        loginId: 'admin',
        password: '123456'
      },
      // 表单校验规则
      loginFormRules: {
        loginId: [
          {required: true, message: '请输入登录名称', trigger: 'blur'},
          {min: 5, max: 8, message: '请输入 5 到 8 个字符', trigger: 'blur'}
        ],
        password: [
          {required: true, message: '请输入登录密码', trigger: 'blur'},
          {min: 6, max: 10, message: '请输入 6 到 10 个字符', trigger: 'blur'}
        ]
      }
    }
  },
  methods: {
    // 重置按钮
    resetLoginForm() {
      // 重置表单的所有项
      this.$refs.loginFormRef.resetFields()
    },
    // 登录按钮
    login() {
      // 判断表单校验是否有效
      this.$refs.loginFormRef.validate(async valid => {
        if (!valid)
          return this.$message.error('校验失败')

        // 发登录请求
        const {data: res} = await this.$http.post('/sysusers/login', this.loginForm)
        console.log('res', res);
        if (res == '')
          return this.$message.error('用户名或密码有误!')

        this.$message.success('登录成功')
        // 保存 token 到 sessionStorage, 与localStorage区别

        console.log(res)
        sessionStorage.setItem('token', res)

        // 导航到 Home 组件
        this.$router.push('/home')
      })
    }
  }
};
</script>

<style scoped>
#login {
  background-color: #2b4b6b;
  height: 100%;
}

.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;

  /* 绝对居中 */
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.img_box {
  border: 1px solid #eee;
  border-radius: 50%;
  width: 130px;
  height: 130px;
  padding: 10px;
  box-shadow: 0 0 10px;
  background-color: #fff;

  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);

  img {
    border: 1px solid #eee;
    border-radius: 50%;
    width: 130px;
    height: 130px;
  }

}

.loginForm_box {
  position: absolute;
  bottom: 0px;
  width: 100%;
  padding: 0 20px;
  /*宽度会包含边框*/
  box-sizing: border-box;
}

.btns {
  display: flex;
  justify-content: end;
}
</style>
